下列实验操作正确的是请选择ABCD.n8F*M8M;k0Q2c+Y1k2j0R6h-A'e-v'?)D
A．1k2j0R6h-A'e-v'?)D
B．1k2j0R6h-A'e-v'?)D
C．1k2j0R6h-A'e-v'?)D
D．1k2j0R6h-A'e-v'?)D
1k2j0R6h-A'e-v'?)D
1k2j0R6h-A'e-v'?)D
1k2j0R6h-A'e-v'?)D
1k2j0R6h-A'e-v'?)D